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9-3. Outdoor Unit
Various displays and various operations are enabled by push buttons (service) switches and LED on the
outdoor control P.C. board.
Service switch (SW800, SW801) operations
LED display
• 4 patterns are provided for LED display.
: ON,
: OFF,
: Rapid flashing (5 times/second),
: Slow flashing (Once/second)
LED display: Initial status
(Yellow) OFF or rapid flashing
(Yellow) OFF or rapid flashing
(Yellow) OFF or rapid flashing
(Yellow) OFF or rapid flashing
(Yellow) OFF or rapid flashing
(Green) ON
D800
D801
D802
D803
D804
D805
LED
D800 D801 D802 D803 D804
• In the initial status of LED display, D805 is ON as the right
figure.
When the initial status does not appear (in case of
flashing of D805), LED display can be returned to the
initial status by pushing and holding the service switches
SW800 and SW801 for 5 seconds or more
simultaneously.
9-3-1. Refrigerant recovery control
HFC refrigerant is “Ozone layer destructive coefficient = 0”. However the discharge regulation is established for
HFC refrigerant as it is greenhouse gas.
For this Model, a switch is mounted for refrigerant recovery operation (pump down) by the outdoor unit so that
this Model can easily react to the environment when it will be reinstalled or scrapped.
[Operating method]
1) Set fan operation to the indoor unit.
2) Check LED display is the initial status. If it is not so, set the initial status.
3) Push and hold SW800 for 5 seconds or more and then check D804 flashes slowly.
4) Push SW800 several times and then stop it at the point where LED display (D800 to D804) is indicated as
the following table.
: ON,
: OFF,
: Rapid flashing (5 times/second)
5) Push SW801 so that D805 flashes rapidly.
6) Push and hold SW801 for 5 seconds or more. The forced cooling operation starts if D804 flashes slowly
and D805 is turned on. (Max. 10 minutes)
7) After operation for 3 minutes or more, close the valve at liquid side.
8) After recovery of refrigerant, close the valve at gas side.
9) Push and hold SW800 and SW801 for 5 seconds or more simultaneously. The LED returns to the initial
status, the cooling operation stops and the indoor fan operation stops.
10)Turn off the power supply.
* If an unknown point generated on the way of the operation, push and hold SW800 and SW801 for 5 seconds
or more simultaneously. You can return to the item 2).